It was created using n0tice, an online noticeboard that grew out of a Guardian hack day and launched as a platform that anyone can use. It launched an open journalism toolkit in May, enabling any news site to create a crowdmap.

Matt McAlister, who leads the n0tice project, told Journalism.co.uk that the live music crowdmap was built by setting up a dedicated noticeboard on n0tice, where journalists can curate and moderate the pictures and reports submitted.

Developers then "built an app on top of the data", McAlister said, customising a Google Map.

McAlister said that the live music map project "could get exciting as we start to see more activity", adding that the Guardian journalists may choose to display the contributions in different ways, such as photo galleries of Instagram pictures taken at gigs.

The latest podcast

Social media is a vital source of information for news organisations but verifying claims and rumours is becoming more and more difficult.

Are news outlets doing enough to safeguard and promote the truth? A recent report from the Tow Center, titled Lies, Damn Lies and Viral Content, suggests they are not, and demands higher standards of journalists in making sure the truth shines through.